/// <summary>
 /// Shows the "Settings" windows form for Web Connectivity Checker when the 
 /// settings menu item is clicked.
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void SettingsMenuItem_Click(object sender, EventArgs e)
 {
     if (_settingsForm == null)
     {
         _settingsForm            =  new SettingsForm();
         _settingsForm.FormClosed += SettingsForm_FormClosed;
         _settingsForm.Show();
     }
     else
     {
         _settingsForm.Activate();
     }
 }
 /// <summary>
 /// Closes and reopens the settings form. Used when checking the network status
 /// and the settings menu is open.
 /// </summary>
 private void ReopenSettingsForm()
 {
     if (_settingsForm != null)
     {
         _settingsForm.Close();
         _settingsForm            =  new SettingsForm();
         _settingsForm.FormClosed += SettingsForm_FormClosed;
         _settingsForm.Show();
     }
 }